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ryzh [129]
3 years ago
6

Which is an accurate description of what occurs when a log burns?

Chemistry
2 answers:
slega [8]3 years ago
3 0

Answer:

D

Explanation:

USATestprep

anzhelika [568]3 years ago
3 0

Answer:

d .The molecules present in the log are transformed into molecules that contain less energy than the original molecules. The energy difference is the heat of the fire.

Explanation:USA TESTPREP

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In the reaction MgCl2 + 2KOH Mg(OH)2+ 2KCI, if 3 moles MgCh are added to 4 moles KOH, what determines how much Mg(OH)2 is made?
gulaghasi [49]

Answer:-

KOH determines how much Mg(OH)2 is made.

2 mol of Mg(OH)2 formed

Explanation:-

The balanced equation is

MgCl2 + 2KOH --> Mg(OH)2+ 2KCI,

From seeing the coefficients we notice

2 mol of KOH reacts with 1 mol of MgCl2

4 mol of KOH reacts with 1 x 4 / 2 = 2 mol of MgCl2

3 moles of MgCl2 was added but only 2 mol react.

So we see there is excess MgCl2 .

Hence KOH is the limiting reactant.

So KOH determines how much Mg(OH)2 is made.

We see from the balanced chemical equation,

2 mol of KOH gives 1 mol of Mg(OH)2.

4 mol of KOH will give 1 x 4 /2 = 2 mol of Mg(OH)2.

7 0
4 years ago
HELP SOMEONE PLEASE I WILL GIVE BRAINLIST I NEED IT NOW PLZ! LOOK AT THE IMAGE ABOVE TO ANSWER
MAVERICK [17]

Answer:

its endothermic .

because your using a cooling process instead of a heating process if it was a heating process it would be exothermic

4 0
3 years ago
According to the collision theory, what is the best explanation for why a higher temperature makes a reaction go faster?
Margarita [4]
A higher temperature makes the particles move faster, that makes them collide more often. The answer would be this: "It increases the average kinetic energy and number of collisions per minute."
4 0
3 years ago
How could a pregnant woman determine whether her child could be born with albinism? a. By determining the unborn child’s phenoty
anyanavicka [17]
By using a pedigree.
4 0
3 years ago
I think I'm allergic to garlic powder. Tonight I am making pasta and will not use garlic powder this time. If I get itchy or not
Readme [11.4K]

Answer:

Explanation:

A garlic allergy is rare. If you're allergic to garlic, you can be allergic to cooked or raw garlic, or to all forms. A garlic allergy is caused when your body's immune system mistakenly identifies garlic as being harmful and produces antibodies in an attempt to fight it off. Does this help?

6 0
3 years ago
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